The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2006
Filed:
Nov. 06, 2000
Applicants:
Joonbae Park, Seoul, KR;
Wonchan Kim, Seoul, KR;
Kyeongho Lee, Seoul, KR;
Deog-kyoon Jeong, Seoul, KR;
Inventors:
Joonbae Park, Seoul, KR;
Wonchan Kim, Seoul, KR;
Kyeongho Lee, Seoul, KR;
Deog-Kyoon Jeong, Seoul, KR;
Assignee:
GCT Semiconductor, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A DC offset cancelling circuit with multiple feedback loops suppresses DC offset voltages within an automatic gain control loop apparatus. The apparatus includes a plurality of gain stages connected in series that receive and amplify an input RF signal. Each gain stage includes a corresponding feedback loop to filter the DC offset voltage accumulated in the respective gain stage.